M31/M33 Catalog: Photometry for M31-004207.85


Open a color composite thumbnail image of M31-004207.85M31-004207.85 (J004207.85+405152.4)


Target Notes

Open a color composite thumbnail image of M31-004207.85

Classification: -

No blend concerns

Find In Simbad Query LGGS Massey (2016) at VizieR Query CAT WISE (Eisenhardt et al., 2020) at VizieR Query Gaia DR3 (2022) at VizieR
Query Kaluzny et al. (1998) M31 Survey at VizieR
Query POINT-AGAPE An et al. (2004) M31 Survey at VizieR

Photometry Table

Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability
MJDV*ImageB*ImageR*ImagesI*Images
56599.11 16.93± 0.03-Open a thumbnail image of M31-004207.85 in filter V on MJD 56599.110
 17.59± 0.10-Open a thumnail image of M31-004207.85 in filter B on MJD 56599.110
 16.48± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 56599.110
----
56930.14 16.96± 0.03-Open a thumbnail image of M31-004207.85 in filter V on MJD 56930.140
 17.68± 0.04-Open a thumnail image of M31-004207.85 in filter B on MJD 56930.140
 16.54± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 56930.140
----
57285.24 16.97± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 57285.240
 17.66± 0.04-Open a thumnail image of M31-004207.85 in filter B on MJD 57285.240
 16.48± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 57285.240
----
57340.19 17.02± 0.06-Open a thumbnail image of M31-004207.85 in filter V on MJD 57340.190
-------- 16.09± 0.08-Open a thumnail image of M31-004207.85 in filter I on MJD 57340.190
57635.27 16.94± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 57635.270
 17.70± 0.04-Open a thumnail image of M31-004207.85 in filter B on MJD 57635.270
 16.47± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 57635.270
 16.04± 0.04-Open a thumnail image of M31-004207.85 in filter I on MJD 57635.270
57743.06 16.88± 0.03-Open a thumbnail image of M31-004207.85 in filter V on MJD 57743.060
 17.59± 0.04-Open a thumnail image of M31-004207.85 in filter B on MJD 57743.060
 16.44± 0.03-Open a thumnail image of M31-004207.85 in filter R on MJD 57743.060
 15.99± 0.04-Open a thumnail image of M31-004207.85 in filter I on MJD 57743.060
57958.40 17.02± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 57958.400
-------- 16.11± 0.06-Open a thumnail image of M31-004207.85 in filter I on MJD 57958.400
57963.41 17.00± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 57963.410
 17.68± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 57963.410
 16.55± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 57963.410
----
57988.26 17.03± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 57988.260
 17.78± 0.04-Open a thumnail image of M31-004207.85 in filter B on MJD 57988.260
 16.55± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 57988.260
----
58035.05 17.02± 0.06-Open a thumbnail image of M31-004207.85 in filter V on MJD 58035.050
---- 16.49± 0.06-Open a thumnail image of M31-004207.85 in filter R on MJD 58035.050
----
58067.16 17.09± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 58067.160
-------- 16.20± 0.06-Open a thumnail image of M31-004207.85 in filter I on MJD 58067.160
58073.10 17.21± 0.06-Open a thumbnail image of M31-004207.85 in filter V on MJD 58073.100
 17.98± 0.06-Open a thumnail image of M31-004207.85 in filter B on MJD 58073.100
--------
58098.15 17.15± 0.04AOpen a thumbnail image of M31-004207.85 in filter V on MJD 58098.150
Open a thumbnail image of M31-004207.85 in filter V on MJD 58098.150
 17.88± 0.04-Open a thumnail image of M31-004207.85 in filter B on MJD 58098.150
 16.68± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 58098.150
 16.23± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 58098.150
58312.37 17.07± 0.06-Open a thumbnail image of M31-004207.85 in filter V on MJD 58312.370
 17.82± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 58312.370
--------
58317.28 17.05± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 58317.280
 17.83± 0.04-Open a thumnail image of M31-004207.85 in filter B on MJD 58317.280
 16.54± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 58317.280
----
58339.29 17.12± 0.05AOpen a thumbnail image of M31-004207.85 in filter V on MJD 58339.290
Open a thumbnail image of M31-004207.85 in filter V on MJD 58339.290
---- 16.68± 0.06-Open a thumnail image of M31-004207.85 in filter R on MJD 58339.290
 16.15± 0.07AOpen a thumnail image of M31-004207.85 in filter I on MJD 58339.290
Open a thumnail image of M31-004207.85 in filter I on MJD 58339.290
58342.28 17.07± 0.05AOpen a thumbnail image of M31-004207.85 in filter V on MJD 58342.280
Open a thumbnail image of M31-004207.85 in filter V on MJD 58342.280
 17.83± 0.06AOpen a thumnail image of M31-004207.85 in filter B on MJD 58342.280
Open a thumnail image of M31-004207.85 in filter B on MJD 58342.280
--------
58373.10 17.04± 0.05AOpen a thumbnail image of M31-004207.85 in filter V on MJD 58373.100
Open a thumbnail image of M31-004207.85 in filter V on MJD 58373.100
 17.80± 0.06AOpen a thumnail image of M31-004207.85 in filter B on MJD 58373.100
Open a thumnail image of M31-004207.85 in filter B on MJD 58373.100
--------
58673.32 17.07± 0.02-Open a thumbnail image of M31-004207.85 in filter V on MJD 58673.320
 17.89± 0.04-Open a thumnail image of M31-004207.85 in filter B on MJD 58673.320
--------
58750.16 17.00± 0.03-Open a thumbnail image of M31-004207.85 in filter V on MJD 58750.160
---- 16.53± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 58750.160
 16.06± 0.06-Open a thumnail image of M31-004207.85 in filter I on MJD 58750.160
58784.10 17.02± 0.02-Open a thumbnail image of M31-004207.85 in filter V on MJD 58784.100
 17.80± 0.03-Open a thumnail image of M31-004207.85 in filter B on MJD 58784.100
--------
58836.15 17.02± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 58836.150
---- 16.59± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 58836.150
 16.16± 0.06-Open a thumnail image of M31-004207.85 in filter I on MJD 58836.150
59026.38 16.96± 0.03-Open a thumbnail image of M31-004207.85 in filter V on MJD 59026.380
 17.64± 0.06-Open a thumnail image of M31-004207.85 in filter B on MJD 59026.380
 16.52± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 59026.380
----
59056.27 17.01± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59056.270
 17.76± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 59056.270
---- 16.08± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 59056.270
59077.27 17.05± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59077.270
---- 16.62± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 59077.270
 16.12± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 59077.270
59082.24 17.05± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59082.240
 17.80± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 59082.240
--------
59136.06 17.04± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 59136.060
---- 16.59± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 59136.060
----
59166.16 16.99± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59166.160
-------- 16.08± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 59166.160
59382.34 16.89± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59382.340
 17.68± 0.08-Open a thumnail image of M31-004207.85 in filter B on MJD 59382.340
--------
59441.28 17.04± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59441.280
---- 16.56± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 59441.280
----
59463.24 17.08± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59463.240
 17.87± 0.06-Open a thumnail image of M31-004207.85 in filter B on MJD 59463.240
---- 16.13± 0.06-Open a thumnail image of M31-004207.85 in filter I on MJD 59463.240
59523.12 17.01± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 59523.120
---- 16.55± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 59523.120
----
59548.02 16.99± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59548.020
 17.72± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 59548.020
---- 16.09± 0.06-Open a thumnail image of M31-004207.85 in filter I on MJD 59548.020
59759.35 17.01± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59759.350
 17.79± 0.08-Open a thumnail image of M31-004207.85 in filter B on MJD 59759.350
 16.58± 0.04-Open a thumnail image of M31-004207.85 in filter R on MJD 59759.350
----
59794.23 16.96± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 59794.230
-------- 16.02± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 59794.230
59849.06 16.95± 0.06-Open a thumbnail image of M31-004207.85 in filter V on MJD 59849.060
 17.65± 0.08-Open a thumnail image of M31-004207.85 in filter B on MJD 59849.060
--------
59903.12 16.98± 0.04-Open a thumbnail image of M31-004207.85 in filter V on MJD 59903.120
---- 16.54± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 59903.120
 16.11± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 59903.120
60147.37 16.94± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 60147.370
 17.63± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 60147.370
 16.49± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 60147.370
----
60175.31 16.95± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 60175.310
-------- 16.04± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 60175.310
60201.11 17.01± 0.06-Open a thumbnail image of M31-004207.85 in filter V on MJD 60201.110
 17.79± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 60201.110
 16.56± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 60201.110
----
60261.05 16.99± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 60261.050
 17.71± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 60261.050
--------
60498.38 16.92± 0.06-Open a thumbnail image of M31-004207.85 in filter V on MJD 60498.380
 17.62± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 60498.380
 16.48± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 60498.380
 16.01± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 60498.380
60533.29 16.91± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 60533.290
 17.63± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 60533.290
--------
60555.22 16.94± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 60555.220
---- 16.50± 0.05-Open a thumnail image of M31-004207.85 in filter R on MJD 60555.220
 16.06± 0.07-Open a thumnail image of M31-004207.85 in filter I on MJD 60555.220
60587.11 16.96± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 60587.110
 17.67± 0.06-Open a thumnail image of M31-004207.85 in filter B on MJD 60587.110
--------
60612.06 17.00± 0.05-Open a thumbnail image of M31-004207.85 in filter V on MJD 60612.060
-------- 16.04± 0.06-Open a thumnail image of M31-004207.85 in filter I on MJD 60612.060
60886.27 17.14± 0.06-Open a thumbnail image of M31-004207.85 in filter V on MJD 60886.270
 17.85± 0.07-Open a thumnail image of M31-004207.85 in filter B on MJD 60886.270
--------
61052.13 17.15± 0.07-Open a thumbnail image of M31-004207.85 in filter V on MJD 61052.130
---- 16.68± 0.08-Open a thumnail image of M31-004207.85 in filter R on MJD 61052.130
----
Download table (txt) Key to Flags in Table Key For Images Plot/Graph Variability

Plots of Brightness and Color

Key for Plot Variability Photometry Table Target Notes

Open a plot of photometry for M31-004207.85Open a plot of color for M31-004207.85

Key for Plot Variability Photometry Table Target Notes

Variability

Plot/Graph Photometry Table Target Notes

It is very likely that this star is variable.

Correlation factors between bands

If the brightness variation is true variability then there should be a correlation between brightness changes recorded in different filter bands. The following table are the R-squared linear correlation factors calculated for the pairs of bands. The number in parentheses next to the R-squared value is the number of elements used to calculate the correlation factor. The number in square brackets next to the band is the range of magnitudes measured.

V [0.33 mag]B [0.39 mag]R [0.24 mag]
B [0.39 mag]0.86 (30)
R [0.24 mag]0.84 (25)0.68 (14)
I [0.24 mag]0.82 (20)0.86 (7)0.85 (10)

Magnitude-Magnitude Plots

The plots below are provided to check the values in the table above and also to show any non-linear correlations

Opens a plot to assess correlation between bands for M31-004207.85

Opens a plot to assess correlation between bands for M31-004207.85

Plot/Graph Photometry Table Target Notes

I & R Statistics

Welch & Stetson (1993, AJ, 105, 1813) present a method for varible star detection in CCD images from automated surveys. Data from two bands are compared and two statistics are calculated: R and I.

The I-statistic has an expectation value of zero for stars that are NOT variable. A larger non-zero I-value indicates a higher likelihood that the star is variable. The R statistic indicates how the color of the star changes as the variable grows brighter with R = 1.0 being no change in color.

R and I values have only been calculated if there are more than four (4) matched measurements of brightness in each band.
V
(I|R)		B
(I|R)		R
(I|R)
B
(I|R)		3.08 | 1.11
R
(I|R)		1.90 | 1.219.95 | 0.06
I
(I|R)		1.57 | 1.512.83 | 1.692.15 | 1.51

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By John C. Martin, University of Illinois Springfield Henry R. Barber Research Observatory

Generated on 2026-10-12 15:55:15 UT-5